Product Profile of Vertical Bladder Type Foam Proportioning Unit

Vertical bladder type foam proportioning unit has dependable foam proportioning as it does not require any external power except fire-water pressure of minimum 4 kg/ cm2 and has low proportioning losses. The unit has wide flow range without change in proportioning ratio and provides accurate proportioning as compared to other types of proportioning systems. The unit has nylon reinforced nitrile foam bladder that provides good foam storage and good reliability and design simplicity that minimizes chances of system failure. The unit has manual/ automatic operation and consists of a foam bladder made of nylon reinforced nitrile rubber, fixed inside the steel pressure vessel that is foam tank and foam proportioner. The unit is externally painted with one coat of zinc chromate primer for normal application or with epoxy primer for marine/ corrosive environment and two coats of fire-red paint. The unit is available from 500 litres to 5,000 litres capacity with foam proportioner from 50 nb to 200 nb for foam solution flow rate from 200 lpm to 20,000 lpm. The vertical bladder type foam proportioning unit can be installed either in single or double vessel configurations to facilitate stand by arrangement for immediate switch over in highly hazardous area.

Application of vertical bladder type foam proportioning unit:

• Hydrocarbon storage tank in refineries
Petrochemical units.

• Chemical process plants.



Key Features of Vertical Bladder Type Foam Proportioning Unit

• Dependable foam proportioning as it does not require any external power except fire-water pressure of minimum 4 kg/ cm2 and has low proportioning losses.
• Wide flow range without change in proportioning ratio and provides accurate proportioning as compared to other types of proportioning systems
• Nylon reinforced nitrile foam bladder that provides good foam storage and good reliability and design simplicity minimizes chances of system failure.
• Manual/ automatic operation
• Consists of a foam bladder made of nylon reinforced nitrile rubber, fixed inside the steel pressure vessel that is foam tank and foam proportioner
• Externally painted with one coat of zinc chromate primer for normal application or with epoxy primer for marine/ corrosive environment and two coats of fire-red paint
• Available from 500 litres to 5,000 litres capacity with foam proportioner from 50 NB to 200 NB for foam solution flow rate from 200 LPM to 20,000 LPM.
• Can be installed either in single or double vessel configurations to facilitate stand by arrangement for immediate switch over in highly hazardous area.
• Vessel is designed and fabricated for working pressure of 12 kg/ cm2 and tested welded joint, edges and internal surfaces are ground smooth, chemically cleaned and coated with two coats of epoxy paint.
• External surfaces are painted with one coat of zinc chromate primer/ epoxy primer and two coats of fire-red paint.
• Foam vessel is provided with two lifting lugs with clear hole size of 38 mm and supported on leg supports.
• Foam bladder is made out of nylon reinforced nitrile rubber.
• The unit can be used with single or multiple proportion for wide flow rang with single or multiple outlets foam equipment.
• Unit is most ideal for foam proportioning particularly for foam systems.